Quote from: cottora on May 17, 2020, 01:38:27 AM

In regards to the PSU discussion...Curios, we have about 800 841 that we are starting to phase out and we are thinking about buying some used 1041s. We have good 841 PSUs in the boneyard, is it possible to use two 841 PSU to power one 1041 (just thinking about cost savings if we get a PSU failure on a 1041).

Thanks

From the A10xx on up all Canaan miners use a built-in PSU and CANNOT use an external one.
Why? Simple - the reason is to squeeze every bit of efficiency they can get. As Bitmain has done the chips on the hash boards are directly powered by the PSU vs having a final high current regulator on each board. The PSU is programmable via the controller and directly sets voltage to the ASIC strings. Losing the secondary regulators boosts eff by several %.